Ice cream freezer for refrigerators



ICE CREAM FREEZER FOR REFRIGERATORS Filed April 22, 1939 I 2 Sheets-Sheet l Inventor April 30 1940, B. L. NISBET Y 2,198,835

7 ICE CREAM FREEZER FOR REFRIGERATORS Filed April22, 1959 2 Sheets-Sheet 2 Fem/NI. MAJ

F .3. y g' 0, B 6m Attorney s Patented Apr. 30, 1940 UNITED STATES PATENT ICE CREAM FREEZER Eon REFRIGERATORS Beatrice L. Nisbet, Abilene, Tex.

Application April 22, 1939, Serial No. 269,485 1 (Cl. 62-114) 5 Claims.

The present invention relates to new and use- :lul improvements in ice cream freezers for mechanical refrigerators and has for one of. its important objects to provide, in a manner as hereinafter set forth, a device of this character comprising an auxiliary refrigerantcoil which is adapted to be connected to the main or regular coilof the usual freezing unit of the refrigerator for receiving the freezing medium therefrom.

Another very important object of the invention is to provide a built-in ice cream freezer of the aforementioned character comprising a novel construction, combination and arrangement of rotary container and dashers, together with novel means for actuating said container and dashers in the proper relationship.

Other objects of the invention are to provide an ice-cream freezer of the character described for mechanical refrigerators which will be com paratively simple in construction, strong, durable, highly efficient and reliable in use, compact and which may be manufactured at low cost.

All of the foregoing and still further objects and advantages of the invention will become ap- 3 parent from a study of the following specification, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several views, and wherein:

Figure 1 is a view in front elevation of an embodiment of the invention, a portion thereof being broken away and shown in section.

Figure 2 is a vertical sectional view through the invention, showing a slightly difierent form or type of drive.

Figure 3 is a detail view in perspective of a vertically slidable hood.

Referring now to the drawings in detail, it will be seen that the reference numeral I desig-* nates generally a domestic mechanical refrigerator comprising a cabinet 2. Mounted in the upper portion of the cabinet 2 is the customary or so-called main freezing unit 3.

Referring to Fig. 2 of the drawings, it will be seen that the reference numeral l designates a vertical shaft which is journaled in the bottom 5 of the cabinet 2. Removably mounted on the upper end of the shaft 4 for rotation in the compartment 6 of the-cabinet l is a cylindrical can or container 1 for the reception of the ice cream mix. Of course, the container i may be of any suitable capacity. It will be observed that the container 1 is located beneath the freezlng unit 3 of the refrigerator. The container 7 i is connected to the shaft 4 for rotation therer of the refrigerant to and from the coil i i.

with through the medium of a square shank d which depends from the bottom ii of said container and which is engageable in a socket it provided therefor on the upper end of said shaft. l i

Encircling the container is an auxiliary coil it which is provided with vertical leads it which are connected to the usual coil of the unit 3. Valves i3 of suitable construction control the flow Mounted for vertical sliding movement on the leads l2 isa hood it of any suitable material which, when in lowered position, is adapted to enclose the coil ii, the container ll, etc. Suitable fasteners iii are providedfor releasably securing the hood Hi in lowered position. Rising from the top of the hood 9 11-15 a substantially flat handle structure it the lower portion of which is of hollow construction to form what may be referred to as an elongated assembling and retention socket ll.

Detachably secured in any suitable manner on the container l and rotatable with said container is a cover It. Joni-nailed centrally in the cover it is a hub is having a beveled gear 20 on its upper end. Rising from the cover it is a crown gear 2i. The reference numeral 22 designates an inner dasher unit which is mounted vertically in the container i, said dasher 22 including a shaft 23. The upper end portion of the shaftfli is journalled in thehub it. The lower end portion of the shaft 23 is journalled in a bearing 2t which is provided therefor on the bottom 9 of the container "l; Fixedon the upper end portion of the shaft 23 is a beveled gear 25. I

The reference numeral 26 designates an outer dasher unit in the container i, the upper por tion of which is fixed on the hub is. The lower portion of the outer dasher 25 is journaled on the bearing 24 and the lower portion of the shaft 23.

Engageable in the socket l! in a manner to be retained against rotation thereby is a substantially U-shaped frame it which is adapted to rest onthe cover it of the containerlw Joure nailed in the frame 2i is a horizontal shaft 28 having fixed thereon a crown gear 29. which is driven by the gear 2i. Alsofixecl on the shaft 50 28 are beveled gears 30 and ii. The gear 30 1 drives the outer dasher unit 26 throughv the gear 2d and the hub 19 and the gear 3| drives the inner dasher unit 22 through the gear 25. A shaft 32 drives the shaft 4 from any suitable 5 source of power (not shown) through gears 33 and 34.

' tates'the container I with the cover i8 thereon.

Thus, the inner and outer dashers 22- and 26,

. respectively, are actuated through the various drive elements, such as the gears 20, 2!, 25, 29, 30, 3|, the hub IS, the shaft 28, etc. However, the construction and arrangement is such that the dashers 22 and 26 are driven in opposite directions. By raising the hood' t4 the container I with the different elements thereon and therein may be expeditiously removed. If desired, the hood I4 may be insulated. Of course, the refrigerant fiows from the coil ofthe unit 3 through one of the leads [2, through the coil II and back to said unit through the other lead Itis believed that the many advantages of an ice cream freezer for mechanical refrigerators constructed in accordance with the present invention will be readily understood and although preferred embodiments of the device are as illus- '-trated and described, it is to be understood that further modifications and changes in the details of construction may be resorted'to which will fall within the. scope of the invention as claimed.

What is claimed is:

1. An ice cream freezer comprising a rotary container, means for rotating said container, a cover mounted on the container for rotation therewith, refrigeration means surrounding said container, a stationary hood enclosing the covered container and refrigeration means, said hood including an upstanding socket member on itsupper portion, a stationary frame engaged in the socket and resting on the cover, a shaft journaledfor rotation in said frame, dashers rotatably mounted in the container, means connecting the shaft to thecover for actuating said cover, and

gearsoperatively connecting the dashers to said shaft for rotation inopposite directions thereby. 2. An ice cream freezer comprising, in combination with a mechanical refrigerator including a cabinet having a food chamber therein and a freezing unit, including a coil, mounted in an upper portion of the chamber, a container rotatably mounted in a lower portion of the chamber beneath the freezing unit, means for rotating said container, a stationary. coil encircling the container, said coil including vertical leads connected to the coil of the freezing unit, ahood mounted for vertical sliding movement on said leads and, when in lowered position, adapted to enclose the container and the sec nd mentioned coil, 8. socket member rising from the top of the hood, a .cover fixed on the container for rotation therewith, inner and outer dashers rotatably mounted. in the container, at substantially U- shaped stationary frame-engaged in the socket member and resting on the cover, a horizontal vided with a hand grip;

2,198,835 I I I shaft journaled in said frame, gears operatively connecting said shaft to the cover for actuating said cover, gears operatively connecting the inner dasher to the shaft for actuation thereby,- and gears operatively connecting the outer dasher to the shaft for actuation in the opposite direction thereby.

3. An ice cream freezercomprising a rotary container, means for rotating said container, a cover mounted on the container for rotation therewith, refrigeration means surrounding said container, a stationary hood enclosing the covered container and said refrigeration means,

said hood including an upstanding socket member on its upper portion, a relatively stationary frame having a part fitting telescopically in said socket to temporarily hold the frame against movement, said frame resting on the cover, a horizontal shaft journaled for rotation in said frame, inner and outer companion dashers rotatably mounted in the container, a. driving gear connection between the cover and shaft for rotating the shaft, a driving gear connection between the shaft and the outer dasher, and a separate driving gear connection between said shaft and the inner dasher.

4. In a mechanical refrigerator having a food compartment therein and a freezing unit including a coil, the combination of an ice cream freezer including a container rotatably mounted in the compartment beneath the freezing unit. means for operating said container, a stationary coil encircling the container, said coil including vertical leads connected with the-first-named' coil in the freezing unit, and a hood for enclosing the container and the second-mentioned coil, said hood being slidably mounted on said leads, the crown portion thereof h mg a hollow riser protuting a receiving and. associated gear and a s 5. In an ice cream scribed, a relatively sta nary support, an ice cream .mix containing can mounted for rotation on said support, mechanical operating means for rotating saidcan, a closing cover for the open top of the can, said cover being centrallyaper tured and provided on its crown portion with a ring gear concentrically surrounding the aperture, a bearing on the interior of the bottom" of the can, a dasher unit mounted for rotation on said bearing, a bushing mounted in the aperture.

provided with parallel refrigerant leads, a hood...

slidably mounted on said leads and enclosing the.

coil, can and cover, said hood having a keeper socket, a frame unit fitting telescopically in said socket to prevent rotation of said frame unit; a shaft journaled for rotation in the frame unit, a gear on the shaft in mesh with the crown gear, a second gear on the shaft in mesh with the gear on said bushing, and a third gear on said shaft in mesh with the beveled gear on the upper end of the adjacent dasher shaft.

BEATRICE L. NISBET. 

